Drilling-line support



the lug 59.

Bosses 58 on the hangers 32 are arranged to be caught by the latch members 56 to retain the shifting lever in rapid operating position. The rock arms 48 are adapted and arranged to release the latch members 56 when the thumb latch lever is operated.

The several views, except Fig. 8,show the parts in position for slow raising and lowering of the temper screw when working under load.

When it is desired to raise or lower the temper screw under load, the parts being in the position shown in Figs. 17, the at tendant will operate the endless chain 38 to cause the worm 35'to drive the worm gear 15, to rotate the shell 13 and the split nut 12 relative to the case 14; thus slowly and powerfully raising or lowering the temper screw 5, according to the direction in which the chain is operated.

When it is desired to temper screw rapidly the attendant will grasp the handle 27 of the lever 27 and will operate the latch 43 to disengage it from This operation moves the rod 45 upwardly when the latch is disengaged and will cause the ends 48. of the rod 46 to be moved toward the shaft 34. After the latch 43 is disengaged from the lug 59 and released by the operator, the spring 60 will will force the rod 45 downward so as to retract the rock arms 48 of the rod 46.

The lever 27 will then be swung upwardly on its pivotal connections 29 and 31 to bring the pinion 36 'nto engagement with the gear 55, as shown in Fig. 8.

This raising of the lever 27 simultaneously moves the shell 13 vertically through action of the shifting yoke 30 and the shifting collar 17 which is secured to the neck 13 of the shell 13. hen the shell is moved vertically up, the dog points 22 sliding upwardly in the angular slots formed in the split nut 12, cause each half of the split nut to slide outward horizontally so as to disengage the temper screw 5. The latch members will then engage the lugs 58 and hold the pinion 36 and gear 55 in engagement.

The fork ends of the shifting lever 27 are connected by a spacing rod 61 which rel atively spaces said arms and serves as a pivot bearing, and when the lever is operated, said spacing rod will move outwardly and release the latch holding means comprising a spring actuated dog 62 which normally engages the turns of the temper screw and supports said screw to prevent any downward movement thereof during the shifting of the shell: or will move upwardly and automatically disengage the dog 62, according to the direction in which it is operated.

The spring 63 moves the dog 62 into ,engagement with the threads of the temper screw and prevents said screw from dropping raise or lower the down when the split nut is out of engagement. Rotation of the shaft 34 by means of the endless chain 38 will rotate the shaft 52 and pinion 54 which is in engagement with the temper screw 5.

When it is desired to rapidly lower the temper screw 5, the handle 64 of the rod 65 is turned so that the oifset portion 66 which engages the underside of the dog 62, will lift said dog out of engagement with the thread of the temper screw 5. The temper screw can thus be run up or down rapidly by operating the sprocket chain.

To change from rapid elevating or lowering position to a working position under load it often occurs that the split nut will not be in position to properly engage the threads of the temper screw; and I provide a pin 67 adapted to engage the worm gear 15, and slidably mounted in a bearing 68 which is fixed to the reins 1, 1" as shown in Fig. 3. A spring 69 encircles said pin 67 to keep it out of engagement with the worm gear 15 when not in use. In order to move the split nut into position to engage the threads of the temper screw, the pin 67 will be pressed inward to engage the teeth of the worm gear and rotate said gear and shell 13; which rotates the split nut 12. This operation is continued until the nut is properly positioned, to engage the temper screw threads. I

Resilient means in the form of a spring 70 encircling the temper screw 5 and arranged between the shell 13 and the top of the nut 12 holds the nut down when the shell is raised; a washer 71 is interposed between the spring and nut and prevents the split nut sections from rising on the pins 22 and engaging the temper screw 5, when the nut should be in disengaged position.

In the foregoing description I have used the term case to indicate the nut supporting means and the term shell to indicate the nut shifting and rotating means, but it is understood that my invention is not confined to any specific form of means for performing the functions stated; and that I do not intend to limit cific construction of the elements thus named, nor to the other elements described and claimed herein.

I claim:

1. The combination with a walking beam and a shaft thereon; of reins spaced apart to form a vertical guide and journaled on said shaft; a case fixed to and supported by said reins; a guide block slidably mounted in said reins and provided with lugs adapted to fit the space between said reins; a temper screw fixed to said guide block; and alternative slow and rapid means for raising and lowering said temper screw relative to the case.

2. Temper screw supporting and operatmy claim to the spe- Patented Jan. 26, 1926.

MORTON HOMER MAGIE, OF LOS ANGELES, CALIFORNIA.

PATENT OFFICE.

DRILLING-LINE SUPPORT.

Application filed November 14, 1921. Serial No. 514,942.

To all whom, it may concern:

Be it known that I, MoR'roN HOMER ll'lAGIE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented a new and useful Drilling-Line Support, of which the following is a specifica tion. a

This invention relates to meanscomprising a clamp adapted to hold the lines that support tools in drilling rigs. Such tools are very heavy and such lines and supports are subject to great strain.

An object of this invention is to provide means adapted to securely clamp drilling cables irrespective of whether said cables be of manila fiber or of metal; the adjustment from one to the other being effected by simply interchanging slips; thus saving time and the expense of a second drillingline clamp.

Another object is to make it possible to easily and almost instantly clamp or release the cable so that there need be no delay in centering the cable or in securing it tightly.

Another object is to provide means by which the drilling-cable will be centered and.

held in central position while theclamping is initiated by a locking lever device, thus saving time heretofore required for adjusting clamps.

Another object is to make provision whereby the clamping will be completed automatically by the weight of the load on the cable after the initial clamping has been effected. I v

This invention broadly includes a singlepoint suspension for the drilling-line clamp, and makes provision whereby the load is centered at this point and the drilling-line or cable, when clamped in slips will have its axis in a straight line intersecting the point of suspension. This feature is adapted to avoid the whipping and swinging of the cable common with clamps where the load .is carried by more than one point of suspension. 1

The term point of suspension as used herein means a single region or surface on which the load is so pivotally supported that it comes gravitationallyto rest when left free to swing in every direction.

In this invention I provide interchangeable and renewable cable-ways in the slips, and thereby render maintenance of the drilling-line clamp less expensive.

An object is to so construct the clamp as to grip the cable more securely as the load increases. 1

An object is to steady the tension on the drilling-cable when the latter is held in the slips, and to make easier the release of the drilling-cable, thus tending to preserve the wearing parts of the clamp. M

Other objects, advantages and featuresjof invention may appear from the accompanying drawing, the sub o1ned detaildescrip tion and the appended claims.

The accompanying drawing illustrates the invention.

Figure 1 is a frontelevation of a drilling-line clamp constructed in accordance with this invention with drilling cable clamped in place andwith a single-point suspension arrangement. forking parts inside and on the farther side, are indicated in dotted lines. I

Fig.- 2 is a fragmental sectional detail of the clamp open, showing working parts inside the C frame, as viewed from the front.

Fig. 3 is an elevation in vertical section on line m Fig. 1. I

Fig. 4 is a horizontal sectionon line 00*. Fig.1.

Fig. 5 is a front view with the clamp open and cable centered to be clamped.

Fig. 6 is a reduced plan of the C with cable slips and guides, and. the cable centering fingers. Other parts are omitted.

Fig. 7 is a reduced rear view of the clamp as shown in Fig. 5.

Fig. 8 is an enlarged view of the cam and toggle joint lost motion connecting means, detached, and partly in section. I

In this invention I provide a rigid frame,

C-shaped, formed with a substantial, back. and edge walls and an open space between such walls.

The C-shaped frame 1 is preferably a steel forging having in the space at its open. front side, rectangular seats 2 to receive the channeled slip guides 3 which are fixed by bolts (.1. to the side walls of the C -shaped frame and in which the slips 4 are fitted and adapted to move toward and from each other to nected together by a toggle joint formed of the links 9 and 10 pivotally-connected at clamp, to release and to receive for clampdraw them toward each other and to move them apart; a connecting rod for operating said toggle joint; a rock shaft connected to operate the connecting rod; and means for holding therock shaft at different positions.

5. The combination with a frame, slips, and toggle joint; of a rod connected to the central pivot of the toggle joint; a swivel through which the rod extends; a spring between the swivel and the toggle joint to force the toggle joint downward, a stop on the rod to be engaged by the swivel to spread the toggle joint and the slips apart; and means to operate the rod.

6. Means for supporting a line comprising a frame provided with guides in fixed relation to each other; said guides being provided with hooks; slips in said guides pivotally connected thereto and adapted to simultaneously move downward and toward each other; and a bail carrying said hooks andhaving a central point of support.

7. In means for supporting a line; slips adapted to engage a line; means for moving the slips simultaneously toward each other; and fingers carried by said slips and adapted to center the line relative to the slips as they move toward each other.

8. .The combination with a rigid C-shaped frame provided with guides; of slips in the guides; means to move the slips toward to engage a line to be supported; a bail for pivotally supporting the frame, said bail having hooks at points equidistant from thecenter of the space between the slips and being provided with a point of suspension vertically above said center line, and equidistant from the hooks, respectively.

10. Line supporting means comprising a frame having guides provided with hooks;

slipsmovable longitudinally and transversely in said guides; elevating means adapted to engage said hooks; and fingers carried by said slips and adapted to center the line relative to the slips.

11. Line supporting means comprising a frame having guides; slips in the guides; a toggle joint connected to said slips; a rod having an extension connecting the central pivot of the toggle joint; and means con nected to operate the rod, said last mentioned means being adapted to allow a definite lostmotion movement in operating the rod.

In testimony whereof, I have hereunto set my hand at Los Angeles, California, this 8th day of November, 1921.

MORTON HOMER MAGIE. 

